کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
25929 43920 2016 6 صفحه PDF ندارد دانلود کنید
عنوان انگلیسی مقاله
Measurement of excited singlet oxygen molecule in a vacuum sterilization system, using electric spin resonance (ESR) with a water-soluble polymer thin film
ترجمه فارسی عنوان
اندازه گیری مولکول اکسیژن مجزا در سیستم استریلیزه خلاء با استفاده از رزونانس اسپین الکتریکی (ESR) با یک فیلم نازک پلیمری محلول در آب
کلمات کلیدی
گونه های اکسیژن فعال؛ استریلیزاسیون؛ مولکول اکسیژن مجزا؛ پلی وینیل الکل؛ رزونانس اسپین الکترون؛ اشعه ماوراء بنفش
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی


• Using ESR technique with a TEMP-PVA film, we invented to measure excited singlet oxygen molecules (1O2) in a vacuum environment.
• 1O2, which has an extremely short lifetime, has been detected at a place apart from UV irradiation.
• Among the active oxygen species generated by UV irradiation, 1O2, with its high reactivity, was the principal species in the sterilization effect.

An advanced sterilization system employing active oxygen species (AOS) was investigated. We revealed in a previous paper that, by using active oxygen species generated from oxygen gas by ultraviolet irradiation in the chamber of the sterilization system, the survival curves of Geobacillus stearothermophilus spores (106 CFU), a biological indicator (BI), showed exponential reduction, and that this sterilization was attributable to the UV-generated AOS. However, we had little knowledge of what specific types of AOS were primarily responsible for the sterilization effects. Therefore, in this study we investigated the principal sterilization contributors among the AOS generated by ultraviolet irradiation, using the electron spin resonance (ESR) technique, with 2,2,6,6-tetramethyl-4-piperidinol (TEMP) as a spin-label reagent for the excited state of atomic oxygen molecules (1O2), and compared the respective sterilization effects of AOS and oxygen plasma system.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 328, 1 September 2016, Pages 148–153
نویسندگان
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